Noun uncheerfulness has 2 senses
  1. cheerlessness, uncheerfulness - a feeling of dreary or pessimistic sadness
    --1 is a kind of sadness, unhappiness
    --1 has particulars: joylessness
  2. uncheerfulness - not conducive to cheer or good spirits
    --2 is a kind of
    attribute
    --2 is a part of disposition, temperament
    Antonyms: cheerfulness, cheer
    --2 has particulars: gloominess, lugubriousness
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